Quantum computers use qubits for processing.

Quantum computers differ from classical computers in that they leverage quantum bits, or qubits, to perform calculations. Unlike classical bits, which are binary and can only exist as 0 or 1, qubits can exist in multiple states simultaneously due to the principles of quantum mechanics. This property, known as superposition, allows quantum computers to process vast amounts of data in parallel, potentially enabling them to solve complex problems much faster than classical computers. While still in the experimental stage, quantum computing holds the promise of revolutionizing fields such as cryptography, drug discovery, and optimization.